public async Task ExecuteAsync(CreateGameCommand command)
{
Validate(command);
Game createdGame = await _gameCommandRepository.AddAsync(game =>
{
game.StartDate = command.Start;
game.TeamA = command.TeamA;
game.TeamB = command.TeamB;
game.Type = command.Type;
game.Group = command.Group;
});
await _eventPublisher.PublishAsync(new GameChangedEvent { Game = createdGame });
}
private static void Validate(CreateGameCommand command)
{
// See also UpdateGameCommandHandler.
// This code is duplicated. Once you have to change it, consider to refactor and put onto domain.
if (command.Start.ToUniversalTime() < DateTimeOffset.UtcNow)
{
throw new ValidationException("The start of the game must not be in the past.");
}
if (command.Type == GameType.Group)
{
if (!command.TeamA.HasValue)
{
throw new ValidationException("TeamA must not be null for a group game.");
}
if (!command.TeamB.HasValue)
{
throw new ValidationException("TeamB must not be null for a group game.");
}
}
}